.contenedorPrincipal {
    border:1px solid black;
}

#contenedorCentral {
    border:1px solid black;
      width:100% !important;
  margin-left:-2px;
}


#banner_container {
    border:1px dotted red;
    height:250px;
    width:100% !important;
    margin-left:-2px;
}

#logo_principal {
  position:absolute;
  height:200px;
  width:220px;
  z-index: 10;
  border:1px solid yellowgreen;
}

#menuPrincipal {
  border:1px dotted purple; 
  width:100% !important;
  margin-left:-2px;
}

#pie_pagina {
    border:1px solid blue;
    width:100% !important;
    margin-left:-2px;
    text-align:center;
}

/** Menu Principal **/
#menuPrincipal ul li {
    float:left;
    list-style: none;
}